Some people (and especially medical students and residents) consider it bad luck to say something like, "Hope it's quiet for you," or, "Hope your call is quiet." Which usually means you will be up all night working with little or no sleep.

The other night at work, the mother of an ex-26 weeker that is now stable at a couple of months old now, was in the room with me while I was taking care of some very unstable little ones. Well, she said she didn't want to say that "word" but it seemed like that "word" was fitting for today. After she left, all hell broke loose. One other nurse in the room was calling people left and right and they had to reintubate her tiny one. My tiny one went into septic shock and everything was a screaming priority all at once.